function login() {
    if(document.loginForm.userId.value==""){
      alert("请输入用户名!");
      document.loginForm.userId.focus();
      return false;
    }
    else if(document.loginForm.password.value==""){
      alert("请输入密码!");
      document.loginForm.password.focus();
      return false;
    }
    return true;
  }

  function checkRegister() {
    if(document.registerForm.userId.value==""){
      alert("请输入用户名！");
      document.registerForm.userId.focus();
	  return false;
    }
    else if(document.registerForm.password.value==""){
      alert("请输入密码！");
      document.registerForm.password.focus();
	  return false;
    }
    else if(document.registerForm.password1.value==""){
      alert("请输入确认密码！");
      document.registerForm.password1.focus();
	  return false;
    }
    else if(document.registerForm.password1.value!=document.registerForm.password.value){
      alert("密码不一致！");
      document.registerForm.password1.focus();
	  return false;
    }
    else if(document.registerForm.username.value==""){
      alert("请输入姓名！");
      document.registerForm.username.focus();
	  return false;
    }
    else if(document.registerForm.idno.value==""){
      alert("请输入证件号码！");
      document.registerForm.idno.focus();
	  return false;
    }
    else if(document.registerForm.address.value==""){
      alert("请输入联系地址！");
      document.registerForm.address.focus();
	  return false;
    }
    else if(document.registerForm.zipcode.value==""){
      alert("请输入邮编！");
      document.registerForm.zipcode.focus();
	  return false;
    }
    else if(document.registerForm.telephone.value==""){
      alert("请输入联系电话！");
      document.registerForm.telephone.focus();
	  return false;
    }
    else if(document.registerForm.email.value==""){
      alert("请输入电子信箱！");
      document.registerForm.email.focus();
	  return false;
    }
  }

  function checkUserUpd() {
    if(document.registerForm.password.value==""){
      alert("请输入密码！");
      document.registerForm.password.focus();
	  return false;
    }
    else if(document.registerForm.password1.value==""){
      alert("请输入确认密码！");
      document.registerForm.password1.focus();
	  return false;
    }
    else if(document.registerForm.password1.value!=document.registerForm.password.value){
      alert("密码不一致！");
      document.registerForm.password1.focus();
	  return false;
    }
    else if(document.registerForm.username.value==""){
      alert("请输入姓名！");
      document.registerForm.username.focus();
	  return false;
    }
    else if(document.registerForm.idno.value==""){
      alert("请输入证件号码！");
      document.registerForm.idno.focus();
	  return false;
    }
    else if(document.registerForm.address.value==""){
      alert("请输入联系地址！");
      document.registerForm.address.focus();
	  return false;
    }
    else if(document.registerForm.zipcode.value==""){
      alert("请输入邮编！");
      document.registerForm.zipcode.focus();
	  return false;
    }
    else if(document.registerForm.telephone.value==""){
      alert("请输入联系电话！");
      document.registerForm.telephone.focus();
	  return false;
    }
    else if(document.registerForm.email.value==""){
      alert("请输入电子信箱！");
      document.registerForm.email.focus();
	  return false;
    }
  }

  function checkArticleAdd(){
     if(document.articleForm.elements["title"].value==""){
       alert("请输入标题！");
       document.articleForm.elements["title"].focus();
       return false;
     }
     if(document.articleForm.elements["category"].value=="城市足迹"){
       if(document.articleForm.elements["shotplace"].value==""){
         alert("请输入拍摄地点！");
         document.articleForm.elements["shotplace"].focus();
         return false;
       }
       else if(document.articleForm.elements["shotdateYY"].value==""){
         alert("请输入拍摄时间年份！");
         document.articleForm.elements["shotdateYY"].focus();
         return false;
       }
       else if(document.articleForm.elements["shotdateMM"].value==""){
         alert("请输入拍摄时间月份！");
         document.articleForm.elements["shotdateMM"].focus();
         return false;
       }
       else if(document.articleForm.elements["shotdateDD"].value==""){
         alert("请输入拍摄时间日！");
         document.articleForm.elements["shotdateDD"].focus();
         return false;
       }
       else if(document.articleForm.elements["shotcontent"].value==""){
         alert("请输入内容！");
         document.articleForm.elements["shotcontent"].focus();
         return false;
       }
	   else if(document.articleForm.elements["attachment"].value==""){
         alert("请上传摄影作品！");
         document.articleForm.elements["attachment"].focus();
         return false;
       }
     }
     else{
       if(document.articleForm.elements["content"].value==""){
         alert("请输入内容！");
         document.articleForm.elements["content"].focus();
         return false;
       }
     }
 }
  
 function changeEdit(option) {
   if(option==2){
     document.all["shotplacetr"].style.display = "";
     document.all["shotdatetr"].style.display = "";
     document.all["shotcontenttr"].style.display = "";
     document.all["contenttr"].style.display = "none";
     document.all["remark"].style.display = "none";
     document.all["shotremark"].style.display = "";
   }
   else{
     document.all["shotplacetr"].style.display = "none";
     document.all["shotdatetr"].style.display = "none";
     document.all["shotcontenttr"].style.display = "none";
     document.all["contenttr"].style.display = "";
     document.all["remark"].style.display = "";
     document.all["shotremark"].style.display = "none";
	}
}

  function checkScore() {
    var scoreCheck=false;
    for(i=0; i<10; i++){
      if(document.scoreForm.score[i].checked){
	    scoreCheck=true;
      }
	}
    if(!scoreCheck){
      alert("请输入分值！");
	  return false;
    }
  }
  
function articleUpd(id){
  openWindow("articleUpd.asp?id="+id,"Article",750,560);
}

function articleDel(id){
  if(confirm("确定要删除吗？")){
    location.href="articleDel.asp?id="+id;
  }
}

function articleDel1(id,category){
  if(confirm("确定要删除吗？")){
    location.href="articleDel1.asp?id="+id+"&category="+category;
  }
}

function openWindow(url,title,w,h){
  var winX = screen.availWidth/2-w/2;
  var winY= screen.availHeight/2-h/2;
  newWin=window.open(url,title,"left="+winX+",top="+winY+",width="+w+",height="+h+",toolbar=no,status=no,scrollbars=no,resizable=no");
  newWin.focus();
}

function redirect(url){
  window.location.href=url;
}

function isInteger(str) {
  var i
  for (i = 0; i < str.length; i++) {
	mychar = str.charAt(i)
	if (mychar < "0" || mychar > "9") return false
  }
  return true
}


function saveProdImg(id){
  window.location.href="imgsave.asp?id="+id;
}